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  1. Prepare
  2. Algorithms
  3. Implementation
  4. Counting Valleys
  5. Discussions

Counting Valleys

  • jgontiverosp
     + 0 comments

    Here's my own PHP solution. 

    function countingValleys($steps, $path) {
    // Write your code here
    $altitude = 0;
    $valleys = 0;

    foreach (str_split($path) as $step) {

        if ($altitude == 0 && $step == 'D') {
            $valleys++;
        }

        if ($step == 'U') {
            $altitude++;
        } else {
            $altitude--;
        }
    }

    return $valleys;
}